if you are swapping the brake booster you should buy this first (Page 1/3)
richard in nc MAR 18, 06:04 PM
unless you already have one.

https://www.amazon.com/dp/B...dt_b_product_details

this will remove all four nuts.if it was a little longer it would have been better.but it will work.the s10 booster is much better.the brakes feel like the ones on my other cars.i doubt it stops any better but at least the brakes feel normal.i really had to smash in the inner fender.
jelly2m8 MAR 18, 08:41 PM

quote
Originally posted by richard in nc:

unless you already have one.

the s10 booster is much better.the brakes feel like the ones on my other cars.i doubt it stops any better but at least the brakes feel normal.i really had to smash in the inner fender.



This is exactly what I tell others, I doubt it brakes any harder, but now the braking action feels Like that of any other modern car, it really makes the Fiero much more enjoyable to drive.

Hmm, I didn't have to touch the inner fender, but I had to reshape a little bit of that inner rail.

[This message has been edited by jelly2m8 (edited 03-18-2024).]

1985 Fiero GT MAR 18, 09:12 PM
So what does this booster do? Does it just make the pedal feel lighter, increase the travel, or what? I hear of this being a great upgrade, but don't understand what it improves upon.
richard in nc MAR 18, 09:14 PM
thats pretty much the hammer i used.i still not sure what fiero parts are called.the car was built backwards
richard in nc MAR 18, 09:20 PM

quote
Originally posted by 1985 Fiero GT:

So what does this booster do? Does it just make the pedal feel lighter, increase the travel, or what? I hear of this being a great upgrade, but don't understand what it improves upon.



when i was coming up to a stop light i would push the brake pedal.it seemed that the car wasn't slowing down fast enough.so id push much harder.now you barely push the pedal and the car slows down.if you like your brakes don't do this.
Patrick MAR 18, 09:28 PM

quote
Originally posted by richard in nc:

when i was coming up to a stop light i would push the brake pedal.it seemed that the car wasn't slowing down fast enough...



I believe your Fiero is an automatic. If so, perhaps the fact that the transmission is continuing to "push" the car forward when you hit the brakes is contributing to this lack of "slowing down fast enough". I've never felt that way about either my '84 or '88 Fiero, both with a manual transmission.
jelly2m8 MAR 18, 11:07 PM

quote
Originally posted by 1985 Fiero GT:

So what does this booster do? Does it just make the pedal feel lighter, increase the travel, or what? I hear of this being a great upgrade, but don't understand what it improves upon.



Basically more boost assist. Does not change pedal travel or anything. Drive anything built within the past 20 years normally and then drive your Fiero normally normally. You will get the idea what the Booster Upgrade does.
1985 Fiero GT MAR 18, 11:55 PM

quote
Originally posted by jelly2m8:


Basically more boost assist. Does not change pedal travel or anything. Drive anything built within the past 20 years normally and then drive your Fiero normally normally. You will get the idea what the Booster Upgrade does.



Ok, makes more sense, as Patrick says, having an automatic probably makes it more obvious, as well as the stiff clutch pedal acustomizing you to a stiffer brake pedal, I couldn't imagine having a lighter brake, it wouldn't match the rest of the car, heavy clutch, heavier then normal gas pedal, notchy shifter, etc. would make more sense with an automatic, as that removes the 2 highest effort things in the cabin.
richard in nc MAR 19, 07:11 AM

quote
Originally posted by jelly2m8:


Basically more boost assist. Does not change pedal travel or anything. Drive anything built within the past 20 years normally and then drive your Fiero normally normally. You will get the idea what the Booster Upgrade does.



that might have been part of the problem.the idles all over the place.up and down.i just feel safer now.
theogre MAR 19, 11:21 AM

quote
Originally posted by 1985 Fiero GT:
So what does this booster do? Does it just make the pedal feel lighter, increase the travel, or what? I hear of this being a great upgrade, but don't understand what it improves upon.

Is most a "fix"/"upgrade" that hinds other brake issue or hinds the old booster is "dead" causing high pedal effort etc but people "sell" this & more crap like many Spark Plugs that "boost" power etc from your engine. Worse when fools/suckers also buy into the "GA Brake Upgrade" either putting parts on or buying TFS "Brake Upgrade Kit" then told to "upgrade" the booster too.

If you need more then "toe effort" to push the pedal to stop @ highway speeds to even lock up 1 or more wheels, you have a High Effort / Hard Pedal problem. Often can have more then 1 problem @ same time like you get High Effort & Low Pedal because have problems w/ booster, vac line to it, or more + "Fiero" rear piston(s) cause big pad clearance "eating" fluid volume make MC & pedal to move more.

By "Toe Effort" I mean just that, w/ a light duty shoe & put toes to very front of foot (the ball of the foot) should be easy to run to brakes even for Panic Stops. While Illegal in most places, many can do that w/ Bare Feet easily but again is Illegal in most places but easy way to tell if have a high effort / "hard" pedal.

More recently They claim like above will feel like "modern brake systems" for Over Boosting the car Ignoring the Modern Cars have ABS & other Features that Prevents any Wheel Locking during Braking. IOW while may "feel modern" on Clean Dry Pavement, the Fiero is now Over Boosted & Way Easier to Loose Control, more so during any Panic Stop or Stop on Wet/icy/Crap/Dirty Roads cause you to hit or get hit then hope your & other Insurance Co's etc never get wind of your "Brake upgrades."

Side note: They also claim the "prop valve" controls wheel locking during braking. Fact is Does Not to this for most car @ most times. Is Bias that's have different brakes front vs back that does most of that on 95+% of vehicles w/ or w/o Full ABS. Only Some cars like 88 Fiero has use the "prop valve" way more because how make/design often to meet Bean Counter's Demands that don't care about how bad the problems likely will be. Also Many Vans/Trucks of many types sold under "ABS" Label are Fakes that only have extra brake valve tied into the rear suspension to self adjust Brakes Power vs Cargo loaded so Check very carefully when buying a vehicle.

------------------
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The Ogre's Fiero Cave